Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Feb. 29, 2012	Nov. 30, 2011
Current Assets
Cash and cash equivalents	$ 201.4	$ 188.0
Accounts receivable	105.0	107.0
Inventories	46.7	49.5
Recoverable from the U.S. government and other third parties for environmental remediation costs	22.2	23.6
Receivable from Northrop Grumman Corporation ("Northrop")	6.0	6.0
Other receivables, prepaid expenses and other	18.9	21.5
Income taxes	0.5	5.3
Total Current Assets	400.7	400.9
Noncurrent Assets
Property, plant and equipment, net	127.2	126.9
Real estate held for entitlement and leasing	64.0	63.3
Recoverable from the U.S. government and other third parties for environmental remediation costs	111.2	114.1
Receivable from Northrop	66.8	66.3
Goodwill	94.9	94.9
Intangible assets	15.0	15.4
Other noncurrent assets, net	51.4	57.7
Total Noncurrent Assets	530.5	538.6
Total Assets	931.2	939.5
Current Liabilities
Short-term borrowings and current portion of long-term debt	2.8	2.8
Accounts payable	33.3	33.8
Reserves for environmental remediation costs	40.3	40.7
Postretirement medical and life benefits	6.8	6.8
Advance payments on contracts	104.7	108.5
Deferred income taxes	8.2	3.1
Other current liabilities	95.7	104.1
Total Current Liabilities	291.8	299.8
Noncurrent Liabilities
Senior debt	46.9	47.5
Senior subordinated notes	75.0	75.0
Convertible subordinated notes	200.2	200.2
Other debt	0.8	0.9
Deferred income taxes	0.3	4.5
Reserves for environmental remediation costs	146.6	149.9
Pension benefits	230.9	236.4
Postretirement medical and life benefits	67.8	68.4
Other noncurrent liabilities	60.6	64.1
Total Noncurrent Liabilities	829.1	846.9
Total Liabilities	1,120.9	1,146.7
Commitments and Contingencies (Note 7)
Redeemable common stock, par value of $0.10; 0.4 million shares issued and outstanding as of February 29, 2012 and November 30, 2011 (Note 8)	4.3	4.4
Shareholders' Deficit
Preference stock, par value of $1.00; 15.0 million shares authorized; none issued or outstanding
Common stock, par value of $0.10; 150.0 million shares authorized; 58.5 million shares issued and outstanding as of February 29, 2012; 58.4 million shares issued and outstanding as of November 30, 2011	5.9	5.9
Other capital	261.7	261.2
Accumulated deficit	(176.9)	(179.3)
Accumulated other comprehensive loss, net of income taxes	(284.7)	(299.4)
Total Shareholders' Deficit	(194.0)	(211.6)
Total Liabilities, Redeemable Common Stock and Shareholders' Deficit	$ 931.2	$ 939.5